Gas-engine



2 Sheets- Sheet 1. J MOHS GAS ENGINE.

(No Model.)

Patented Apr. 22, 1890.

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w: owns vertus cu., Fumo-umm, wAsmNaYon n c (No Model.) 2 sheets-sheet 2. J. MOHS.

GAS ENGINE.

No. 426,297. PatentedA I. 2251890.

rn: nomas Pneus Ico., muro-mno., mmm-.wm o, c.

UNITED STATES PATENT OFFICE.

J ULIUS MOIIS, OF PHILADELPHIA, PENNSYLVANIA.

GAS-ENGINE.

SPECIFICATION forming part of Letters 'Patent No. 426,297, dated April 22, 1890.

Application filed August 20, 1889. Serial No. 321,435. (No model.)

To all whom it may concern:

Be it known that I, JULIUS MOHs, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsyl- Vania, have invented a new and useful Improvement in Gas-Engines, which improvement is fully set forth in the following speci` flcation and accompanying drawings.

The invention essentially consists of a gasen gine wherein the power developed bya rotating shaft actuates a sliding connection attached and operating a sliding valve to open and close gas and air inlet ports, and also to operate an exhaust-valve relatively with said sliding valve.

The invention further consists of the general construction, arrangement, and combination of the several parts, as will be more fully hereinafter set forth.

The object of the invention is to dispense with a multiplicity of parts and to thereby simplify the construction and cause a more direct application of the power as generated.

Figure l represents a vertical section of a gas-engine embodying my invention. Fig. 2 represents a plan view of the slide-valve and its sliding connection. Fig. 3 represents an end elevation of the valve detached. Fig. 4t represents a plan view of the sliding connection for the valve. Fig. 5 represents a side elevation of a gas-engine embodying my invention. Fig. 6 represents an end elevation of the slide-valve and connecting-slide. Fig. 7 represents an end elevation of the sliding connection. Fig. 8 represents a front view of the valve and sliding connection. Figs. 9 and l0 represent, respectively, a side and a front view of the crank for operating the sliding connection of the slide-valve. Fig. l1 represents a plan view of the swinging eccentricrod for operating the slide-valve through the sliding connection. Fig. 12 represents a vsimilar view of the device shown in Fig. 1l, having a slightly-modified central bearing. Fig. 13 represents a side elevation of the engine, showing the slide-box in section and the slidewalve and sliding connection removed. Fig. 14. represents a horizontal section through the pistolncylinder and slide-box.

Similar letters of reference indicate correspending parts in the several figures.

Referring to the drawings, A designates a shaft, on which is mounted a gearavlieel C', adapted to mesh with any suitable mechanism operated by the main shaft, (not shown,) and to said gear-wheel is eccentrically attached one end of a connecting-rod or pitman y', whose opposite end is eccentrically secured to a verticallydisposed bevel gearwheel g2 by a suitable crank, said wheel g2 be ing in mesh with ahorizontally-situated bevel gear-wheel g3, in connection with the shaft gG of a governor g4. The central portion of the said pitman g has loose bearing through or upon a suitable movable or station ary support g, as shown in Figs. 5, ll, and 12; butin all constructions it is necessary that the said pitman have a swinging movement and a sliding play on its support g. The said gearwheelgl is mounted on a shaft g5, on the inner end of which is affixed a crank Z), having a cam a, and on the inner face of said crank b is fixed a wrist-pin or analogous device n. To the said device n is attached a sliding connection a', consisting of a block or plate engaging a slideevalve a2, working over ports d3 and a", and an igniting-duct a5 in the divisional wall between a box or chamber 7L and a cylinder 7L. The port d3 constitutes a canal or chamber, which receives the commingled air and gas from the air and gas supply pipes d' and d2. The port a* extends through the divisional wall between the box or chamber 7L and the cylinder 7L and forms the sole communicatiom from the port co3 and the duct d5 into said cylinder. The duct a5 contains a jet of flame for igniting the commingled gas and air to produce the requisite explosion.

The cam n of the crank l) is adapted to engage and operate the upper end of a bellcrank lever b', which is connected to the stem of a valve b2, said stem having a weight b3 on the lower end thereof to return the same to its sea-t when raised by said bell-crank leverh. Said valve provides means of exhaust for the cylinder and opens communication between the same and an escape-duct 1'., extending through the wall of cyliuderh. The said cylinder 7L is surrounded by a waterjacket C to temper the same and ameliorate the heated condition thereof arising from the successive explosions of the gas` and air and heat generated thereby. Y

Vithin the cylinder 7L is mounted a piston IOO f, having a rod connected to a suitable crank- Wheel. (Not shown.)

In operation the gas and air are drawn into the cylinder k through pipes CZ and d2 and ports a3 and a4 as the piston makes a forward stroke underv accumulated momentum, and the said piston compresses the charge on the return-stroke, and then the charge is fired by the igniting-fiame in the duct a5.

The mechanism operating the sliding connection a and the slide-valve a2 is so relatively timed that said slide-valve first opens communication between the gas and air port a3 and the cylinder h, and then shuts off said communication and connects the duct a5 with the port a4 to cause an explosion of the commingled gas and air in the cylinder` h, which reaches the flame in duct a5 through port a4, to again force the piston back. After each explosion the valve b2 is raised to exhaust t-he cylinder h by means of the cam n on crank b operating the lever b, as set forth. This operation becomes successive and the mechanism regularly operated thereby.

The construction of the governor mechanism, though I do not limit myself to this precise arrangement, is as follows: The cylinder h has standards h2 mounted thereon, whose upper portions are tubular and joined at their upper ends by a tubular yoke h3, having a centrally-located spring-actuated valve h4. The stem h5 of said valve depends adjacent to the sleeve g7 on the governor-shaft Q6, and the said valve, being controlled by a spring, is opened or closed as the sleeve Q7 rises or falls on the said shaft g, which operation is due to the movement of the governorarms by centrifugal force. A pipe 7c connects the cylinder h with one of the standards h2, and an exhaust-pipe 7e is attached to the other standard h2. The said pipe 7c is supplied With a check-valve k2, for a purpose Well understood. The slide valve a2 is vertically disposed and travels longitudinally of the cylinder h, and is operated by the sliding connection a held therein and moving vertically therethrough, the said connection being actuated by the Wrist-pin n or analogous device on the eccentric b. The time of verse guide in said valve, and a sliding eon- Y nection in said guide, operated bya revolving shaft, said shaft being parallel to and operated by connection with the main engineshaft, substantially as described.

2. In a gas-engine, the combination of a reciprocating valve for controlling the admission and ignition of the charge, a transverse guide in said valve, operated by a revolving shaft, said shaft being parallel to and operated by the main engine-shaft, and mechanism for operating a centrifugal governor directly from the revolving shaft simultaneously with the valve, substantially as described.

3. In a gas-engine, the combination of the crank l), having a cam n thereon and a Wristpin or analogous device n 011 one face thereof, the vconnecting-slide a', attached to said device n', and the slide-valve c2, substantially as described.

4. In a gas-engine, the combination of the cylinder having ports therein, a slide-valve over said ports, an actuating connecting-slide for said valve, the crank for operating said connecting-slide, an exhaust-valve opened by said crank, and the swinging pitman, substantially as described.

5. In a gas-engine, the combination of the cylinder or chamber having a piston therein and ports, a slide-valve over said ports, a sliding connection for said valve, and aswinging pitman movably mounted on -a fulcrum, substantially as described.

. Y. JULIUS MOHS. [L s.]

\Vitnesses:

IV. ESCHENBECK, OsvvALD SEIDEL. 

